1 /* 2 * acpi_bus.h - ACPI Bus Driver ($Revision: 22 $) 3 * 4 * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> 5 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> 6 * 7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or (at 12 * your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 20 */ 21 22 #ifndef __ACPI_BUS_H__ 23 #define __ACPI_BUS_H__ 24 25 #include <linux/device.h> 26 #include <linux/property.h> 27 28 /* TBD: Make dynamic */ 29 #define ACPI_MAX_HANDLES 10 30 struct acpi_handle_list { 31 u32 count; 32 acpi_handle handles[ACPI_MAX_HANDLES]; 33 }; 34 35 /* acpi_utils.h */ 36 acpi_status 37 acpi_extract_package(union acpi_object *package, 38 struct acpi_buffer *format, struct acpi_buffer *buffer); 39 acpi_status 40 acpi_evaluate_integer(acpi_handle handle, 41 acpi_string pathname, 42 struct acpi_object_list *arguments, unsigned long long *data); 43 acpi_status 44 acpi_evaluate_reference(acpi_handle handle, 45 acpi_string pathname, 46 struct acpi_object_list *arguments, 47 struct acpi_handle_list *list); 48 acpi_status 49 acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code, 50 struct acpi_buffer *status_buf); 51 52 acpi_status 53 acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld); 54 55 bool acpi_has_method(acpi_handle handle, char *name); 56 acpi_status acpi_execute_simple_method(acpi_handle handle, char *method, 57 u64 arg); 58 acpi_status acpi_evaluate_ej0(acpi_handle handle); 59 acpi_status acpi_evaluate_lck(acpi_handle handle, int lock); 60 bool acpi_ata_match(acpi_handle handle); 61 bool acpi_bay_match(acpi_handle handle); 62 bool acpi_dock_match(acpi_handle handle); 63 64 bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs); 65 union acpi_object *acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, 66 u64 rev, u64 func, union acpi_object *argv4); 67 68 static inline union acpi_object * 69 acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev, 70 u64 func, union acpi_object *argv4, 71 acpi_object_type type) 72 { 73 union acpi_object *obj; 74 75 obj = acpi_evaluate_dsm(handle, guid, rev, func, argv4); 76 if (obj && obj->type != type) { 77 ACPI_FREE(obj); 78 obj = NULL; 79 } 80 81 return obj; 82 } 83 84 #define ACPI_INIT_DSM_ARGV4(cnt, eles) \ 85 { \ 86 .package.type = ACPI_TYPE_PACKAGE, \ 87 .package.count = (cnt), \ 88 .package.elements = (eles) \ 89 } 90 91 bool acpi_dev_found(const char *hid); 92 bool acpi_dev_present(const char *hid, const char *uid, s64 hrv); 93 94 const char * 95 acpi_dev_get_first_match_name(const char *hid, const char *uid, s64 hrv); 96 97 #ifdef CONFIG_ACPI 98 99 #include <linux/proc_fs.h> 100 101 #define ACPI_BUS_FILE_ROOT "acpi" 102 extern struct proc_dir_entry *acpi_root_dir; 103 104 enum acpi_bus_device_type { 105 ACPI_BUS_TYPE_DEVICE = 0, 106 ACPI_BUS_TYPE_POWER, 107 ACPI_BUS_TYPE_PROCESSOR, 108 ACPI_BUS_TYPE_THERMAL, 109 ACPI_BUS_TYPE_POWER_BUTTON, 110 ACPI_BUS_TYPE_SLEEP_BUTTON, 111 ACPI_BUS_TYPE_ECDT_EC, 112 ACPI_BUS_DEVICE_TYPE_COUNT 113 }; 114 115 struct acpi_driver; 116 struct acpi_device; 117 118 /* 119 * ACPI Scan Handler 120 * ----------------- 121 */ 122 123 struct acpi_hotplug_profile { 124 struct kobject kobj; 125 int (*scan_dependent)(struct acpi_device *adev); 126 void (*notify_online)(struct acpi_device *adev); 127 bool enabled:1; 128 bool demand_offline:1; 129 }; 130 131 static inline struct acpi_hotplug_profile *to_acpi_hotplug_profile( 132 struct kobject *kobj) 133 { 134 return container_of(kobj, struct acpi_hotplug_profile, kobj); 135 } 136 137 struct acpi_scan_handler { 138 const struct acpi_device_id *ids; 139 struct list_head list_node; 140 bool (*match)(const char *idstr, const struct acpi_device_id **matchid); 141 int (*attach)(struct acpi_device *dev, const struct acpi_device_id *id); 142 void (*detach)(struct acpi_device *dev); 143 void (*bind)(struct device *phys_dev); 144 void (*unbind)(struct device *phys_dev); 145 struct acpi_hotplug_profile hotplug; 146 }; 147 148 /* 149 * ACPI Hotplug Context 150 * -------------------- 151 */ 152 153 struct acpi_hotplug_context { 154 struct acpi_device *self; 155 int (*notify)(struct acpi_device *, u32); 156 void (*uevent)(struct acpi_device *, u32); 157 void (*fixup)(struct acpi_device *); 158 }; 159 160 /* 161 * ACPI Driver 162 * ----------- 163 */ 164 165 typedef int (*acpi_op_add) (struct acpi_device * device); 166 typedef int (*acpi_op_remove) (struct acpi_device * device); 167 typedef void (*acpi_op_notify) (struct acpi_device * device, u32 event); 168 169 struct acpi_device_ops { 170 acpi_op_add add; 171 acpi_op_remove remove; 172 acpi_op_notify notify; 173 }; 174 175 #define ACPI_DRIVER_ALL_NOTIFY_EVENTS 0x1 /* system AND device events */ 176 177 struct acpi_driver { 178 char name[80]; 179 char class[80]; 180 const struct acpi_device_id *ids; /* Supported Hardware IDs */ 181 unsigned int flags; 182 struct acpi_device_ops ops; 183 struct device_driver drv; 184 struct module *owner; 185 }; 186 187 /* 188 * ACPI Device 189 * ----------- 190 */ 191 192 /* Status (_STA) */ 193 194 struct acpi_device_status { 195 u32 present:1; 196 u32 enabled:1; 197 u32 show_in_ui:1; 198 u32 functional:1; 199 u32 battery_present:1; 200 u32 reserved:27; 201 }; 202 203 /* Flags */ 204 205 struct acpi_device_flags { 206 u32 dynamic_status:1; 207 u32 removable:1; 208 u32 ejectable:1; 209 u32 power_manageable:1; 210 u32 match_driver:1; 211 u32 initialized:1; 212 u32 visited:1; 213 u32 hotplug_notify:1; 214 u32 is_dock_station:1; 215 u32 of_compatible_ok:1; 216 u32 coherent_dma:1; 217 u32 cca_seen:1; 218 u32 enumeration_by_parent:1; 219 u32 reserved:19; 220 }; 221 222 /* File System */ 223 224 struct acpi_device_dir { 225 struct proc_dir_entry *entry; 226 }; 227 228 #define acpi_device_dir(d) ((d)->dir.entry) 229 230 /* Plug and Play */ 231 232 typedef char acpi_bus_id[8]; 233 typedef unsigned long acpi_bus_address; 234 typedef char acpi_device_name[40]; 235 typedef char acpi_device_class[20]; 236 237 struct acpi_hardware_id { 238 struct list_head list; 239 const char *id; 240 }; 241 242 struct acpi_pnp_type { 243 u32 hardware_id:1; 244 u32 bus_address:1; 245 u32 platform_id:1; 246 u32 reserved:29; 247 }; 248 249 struct acpi_device_pnp { 250 acpi_bus_id bus_id; /* Object name */ 251 struct acpi_pnp_type type; /* ID type */ 252 acpi_bus_address bus_address; /* _ADR */ 253 char *unique_id; /* _UID */ 254 struct list_head ids; /* _HID and _CIDs */ 255 acpi_device_name device_name; /* Driver-determined */ 256 acpi_device_class device_class; /* " */ 257 union acpi_object *str_obj; /* unicode string for _STR method */ 258 }; 259 260 #define acpi_device_bid(d) ((d)->pnp.bus_id) 261 #define acpi_device_adr(d) ((d)->pnp.bus_address) 262 const char *acpi_device_hid(struct acpi_device *device); 263 #define acpi_device_uid(d) ((d)->pnp.unique_id) 264 #define acpi_device_name(d) ((d)->pnp.device_name) 265 #define acpi_device_class(d) ((d)->pnp.device_class) 266 267 /* Power Management */ 268 269 struct acpi_device_power_flags { 270 u32 explicit_get:1; /* _PSC present? */ 271 u32 power_resources:1; /* Power resources */ 272 u32 inrush_current:1; /* Serialize Dx->D0 */ 273 u32 power_removed:1; /* Optimize Dx->D0 */ 274 u32 ignore_parent:1; /* Power is independent of parent power state */ 275 u32 dsw_present:1; /* _DSW present? */ 276 u32 reserved:26; 277 }; 278 279 struct acpi_device_power_state { 280 struct { 281 u8 valid:1; 282 u8 explicit_set:1; /* _PSx present? */ 283 u8 reserved:6; 284 } flags; 285 int power; /* % Power (compared to D0) */ 286 int latency; /* Dx->D0 time (microseconds) */ 287 struct list_head resources; /* Power resources referenced */ 288 }; 289 290 struct acpi_device_power { 291 int state; /* Current state */ 292 struct acpi_device_power_flags flags; 293 struct acpi_device_power_state states[ACPI_D_STATE_COUNT]; /* Power states (D0-D3Cold) */ 294 }; 295 296 /* Performance Management */ 297 298 struct acpi_device_perf_flags { 299 u8 reserved:8; 300 }; 301 302 struct acpi_device_perf_state { 303 struct { 304 u8 valid:1; 305 u8 reserved:7; 306 } flags; 307 u8 power; /* % Power (compared to P0) */ 308 u8 performance; /* % Performance ( " ) */ 309 int latency; /* Px->P0 time (microseconds) */ 310 }; 311 312 struct acpi_device_perf { 313 int state; 314 struct acpi_device_perf_flags flags; 315 int state_count; 316 struct acpi_device_perf_state *states; 317 }; 318 319 /* Wakeup Management */ 320 struct acpi_device_wakeup_flags { 321 u8 valid:1; /* Can successfully enable wakeup? */ 322 u8 notifier_present:1; /* Wake-up notify handler has been installed */ 323 }; 324 325 struct acpi_device_wakeup_context { 326 void (*func)(struct acpi_device_wakeup_context *context); 327 struct device *dev; 328 }; 329 330 struct acpi_device_wakeup { 331 acpi_handle gpe_device; 332 u64 gpe_number; 333 u64 sleep_state; 334 struct list_head resources; 335 struct acpi_device_wakeup_flags flags; 336 struct acpi_device_wakeup_context context; 337 struct wakeup_source *ws; 338 int prepare_count; 339 int enable_count; 340 }; 341 342 struct acpi_device_physical_node { 343 unsigned int node_id; 344 struct list_head node; 345 struct device *dev; 346 bool put_online:1; 347 }; 348 349 struct acpi_device_properties { 350 const guid_t *guid; 351 const union acpi_object *properties; 352 struct list_head list; 353 }; 354 355 /* ACPI Device Specific Data (_DSD) */ 356 struct acpi_device_data { 357 const union acpi_object *pointer; 358 struct list_head properties; 359 const union acpi_object *of_compatible; 360 struct list_head subnodes; 361 }; 362 363 struct acpi_gpio_mapping; 364 365 /* Device */ 366 struct acpi_device { 367 int device_type; 368 acpi_handle handle; /* no handle for fixed hardware */ 369 struct fwnode_handle fwnode; 370 struct acpi_device *parent; 371 struct list_head children; 372 struct list_head node; 373 struct list_head wakeup_list; 374 struct list_head del_list; 375 struct acpi_device_status status; 376 struct acpi_device_flags flags; 377 struct acpi_device_pnp pnp; 378 struct acpi_device_power power; 379 struct acpi_device_wakeup wakeup; 380 struct acpi_device_perf performance; 381 struct acpi_device_dir dir; 382 struct acpi_device_data data; 383 struct acpi_scan_handler *handler; 384 struct acpi_hotplug_context *hp; 385 struct acpi_driver *driver; 386 const struct acpi_gpio_mapping *driver_gpios; 387 void *driver_data; 388 struct device dev; 389 unsigned int physical_node_count; 390 unsigned int dep_unmet; 391 struct list_head physical_node_list; 392 struct mutex physical_node_lock; 393 void (*remove)(struct acpi_device *); 394 }; 395 396 /* Non-device subnode */ 397 struct acpi_data_node { 398 const char *name; 399 acpi_handle handle; 400 struct fwnode_handle fwnode; 401 struct fwnode_handle *parent; 402 struct acpi_device_data data; 403 struct list_head sibling; 404 struct kobject kobj; 405 struct completion kobj_done; 406 }; 407 408 extern const struct fwnode_operations acpi_device_fwnode_ops; 409 extern const struct fwnode_operations acpi_data_fwnode_ops; 410 extern const struct fwnode_operations acpi_static_fwnode_ops; 411 412 bool is_acpi_device_node(const struct fwnode_handle *fwnode); 413 bool is_acpi_data_node(const struct fwnode_handle *fwnode); 414 415 static inline bool is_acpi_node(const struct fwnode_handle *fwnode) 416 { 417 return (is_acpi_device_node(fwnode) || is_acpi_data_node(fwnode)); 418 } 419 420 #define to_acpi_device_node(__fwnode) \ 421 ({ \ 422 typeof(__fwnode) __to_acpi_device_node_fwnode = __fwnode; \ 423 \ 424 is_acpi_device_node(__to_acpi_device_node_fwnode) ? \ 425 container_of(__to_acpi_device_node_fwnode, \ 426 struct acpi_device, fwnode) : \ 427 NULL; \ 428 }) 429 430 #define to_acpi_data_node(__fwnode) \ 431 ({ \ 432 typeof(__fwnode) __to_acpi_data_node_fwnode = __fwnode; \ 433 \ 434 is_acpi_data_node(__to_acpi_data_node_fwnode) ? \ 435 container_of(__to_acpi_data_node_fwnode, \ 436 struct acpi_data_node, fwnode) : \ 437 NULL; \ 438 }) 439 440 static inline bool is_acpi_static_node(const struct fwnode_handle *fwnode) 441 { 442 return !IS_ERR_OR_NULL(fwnode) && 443 fwnode->ops == &acpi_static_fwnode_ops; 444 } 445 446 static inline bool acpi_data_node_match(const struct fwnode_handle *fwnode, 447 const char *name) 448 { 449 return is_acpi_data_node(fwnode) ? 450 (!strcmp(to_acpi_data_node(fwnode)->name, name)) : false; 451 } 452 453 static inline struct fwnode_handle *acpi_fwnode_handle(struct acpi_device *adev) 454 { 455 return &adev->fwnode; 456 } 457 458 static inline void *acpi_driver_data(struct acpi_device *d) 459 { 460 return d->driver_data; 461 } 462 463 #define to_acpi_device(d) container_of(d, struct acpi_device, dev) 464 #define to_acpi_driver(d) container_of(d, struct acpi_driver, drv) 465 466 static inline void acpi_set_device_status(struct acpi_device *adev, u32 sta) 467 { 468 *((u32 *)&adev->status) = sta; 469 } 470 471 static inline void acpi_set_hp_context(struct acpi_device *adev, 472 struct acpi_hotplug_context *hp) 473 { 474 hp->self = adev; 475 adev->hp = hp; 476 } 477 478 void acpi_initialize_hp_context(struct acpi_device *adev, 479 struct acpi_hotplug_context *hp, 480 int (*notify)(struct acpi_device *, u32), 481 void (*uevent)(struct acpi_device *, u32)); 482 483 /* acpi_device.dev.bus == &acpi_bus_type */ 484 extern struct bus_type acpi_bus_type; 485 486 /* 487 * Events 488 * ------ 489 */ 490 491 struct acpi_bus_event { 492 struct list_head node; 493 acpi_device_class device_class; 494 acpi_bus_id bus_id; 495 u32 type; 496 u32 data; 497 }; 498 499 extern struct kobject *acpi_kobj; 500 extern int acpi_bus_generate_netlink_event(const char*, const char*, u8, int); 501 void acpi_bus_private_data_handler(acpi_handle, void *); 502 int acpi_bus_get_private_data(acpi_handle, void **); 503 int acpi_bus_attach_private_data(acpi_handle, void *); 504 void acpi_bus_detach_private_data(acpi_handle); 505 extern int acpi_notifier_call_chain(struct acpi_device *, u32, u32); 506 extern int register_acpi_notifier(struct notifier_block *); 507 extern int unregister_acpi_notifier(struct notifier_block *); 508 509 /* 510 * External Functions 511 */ 512 513 int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device); 514 struct acpi_device *acpi_bus_get_acpi_device(acpi_handle handle); 515 void acpi_bus_put_acpi_device(struct acpi_device *adev); 516 acpi_status acpi_bus_get_status_handle(acpi_handle handle, 517 unsigned long long *sta); 518 int acpi_bus_get_status(struct acpi_device *device); 519 520 int acpi_bus_set_power(acpi_handle handle, int state); 521 const char *acpi_power_state_string(int state); 522 int acpi_device_get_power(struct acpi_device *device, int *state); 523 int acpi_device_set_power(struct acpi_device *device, int state); 524 int acpi_bus_init_power(struct acpi_device *device); 525 int acpi_device_fix_up_power(struct acpi_device *device); 526 int acpi_bus_update_power(acpi_handle handle, int *state_p); 527 int acpi_device_update_power(struct acpi_device *device, int *state_p); 528 bool acpi_bus_power_manageable(acpi_handle handle); 529 530 #ifdef CONFIG_PM 531 bool acpi_bus_can_wakeup(acpi_handle handle); 532 #else 533 static inline bool acpi_bus_can_wakeup(acpi_handle handle) { return false; } 534 #endif 535 536 void acpi_scan_lock_acquire(void); 537 void acpi_scan_lock_release(void); 538 void acpi_lock_hp_context(void); 539 void acpi_unlock_hp_context(void); 540 int acpi_scan_add_handler(struct acpi_scan_handler *handler); 541 int acpi_bus_register_driver(struct acpi_driver *driver); 542 void acpi_bus_unregister_driver(struct acpi_driver *driver); 543 int acpi_bus_scan(acpi_handle handle); 544 void acpi_bus_trim(struct acpi_device *start); 545 acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle * ejd); 546 int acpi_match_device_ids(struct acpi_device *device, 547 const struct acpi_device_id *ids); 548 void acpi_set_modalias(struct acpi_device *adev, const char *default_id, 549 char *modalias, size_t len); 550 int acpi_create_dir(struct acpi_device *); 551 void acpi_remove_dir(struct acpi_device *); 552 553 static inline bool acpi_device_enumerated(struct acpi_device *adev) 554 { 555 return adev && adev->flags.initialized && adev->flags.visited; 556 } 557 558 /** 559 * module_acpi_driver(acpi_driver) - Helper macro for registering an ACPI driver 560 * @__acpi_driver: acpi_driver struct 561 * 562 * Helper macro for ACPI drivers which do not do anything special in module 563 * init/exit. This eliminates a lot of boilerplate. Each module may only 564 * use this macro once, and calling it replaces module_init() and module_exit() 565 */ 566 #define module_acpi_driver(__acpi_driver) \ 567 module_driver(__acpi_driver, acpi_bus_register_driver, \ 568 acpi_bus_unregister_driver) 569 570 /* 571 * Bind physical devices with ACPI devices 572 */ 573 struct acpi_bus_type { 574 struct list_head list; 575 const char *name; 576 bool (*match)(struct device *dev); 577 struct acpi_device * (*find_companion)(struct device *); 578 void (*setup)(struct device *); 579 void (*cleanup)(struct device *); 580 }; 581 int register_acpi_bus_type(struct acpi_bus_type *); 582 int unregister_acpi_bus_type(struct acpi_bus_type *); 583 int acpi_bind_one(struct device *dev, struct acpi_device *adev); 584 int acpi_unbind_one(struct device *dev); 585 586 struct acpi_pci_root { 587 struct acpi_device * device; 588 struct pci_bus *bus; 589 u16 segment; 590 struct resource secondary; /* downstream bus range */ 591 592 u32 osc_support_set; /* _OSC state of support bits */ 593 u32 osc_control_set; /* _OSC state of control bits */ 594 phys_addr_t mcfg_addr; 595 }; 596 597 /* helper */ 598 599 bool acpi_dma_supported(struct acpi_device *adev); 600 enum dev_dma_attr acpi_get_dma_attr(struct acpi_device *adev); 601 int acpi_dma_get_range(struct device *dev, u64 *dma_addr, u64 *offset, 602 u64 *size); 603 int acpi_dma_configure(struct device *dev, enum dev_dma_attr attr); 604 605 struct acpi_device *acpi_find_child_device(struct acpi_device *parent, 606 u64 address, bool check_children); 607 int acpi_is_root_bridge(acpi_handle); 608 struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle); 609 610 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int state); 611 int acpi_disable_wakeup_device_power(struct acpi_device *dev); 612 613 #ifdef CONFIG_X86 614 bool acpi_device_always_present(struct acpi_device *adev); 615 #else 616 static inline bool acpi_device_always_present(struct acpi_device *adev) 617 { 618 return false; 619 } 620 #endif 621 622 #ifdef CONFIG_PM 623 void acpi_pm_wakeup_event(struct device *dev); 624 acpi_status acpi_add_pm_notifier(struct acpi_device *adev, struct device *dev, 625 void (*func)(struct acpi_device_wakeup_context *context)); 626 acpi_status acpi_remove_pm_notifier(struct acpi_device *adev); 627 bool acpi_pm_device_can_wakeup(struct device *dev); 628 int acpi_pm_device_sleep_state(struct device *, int *, int); 629 int acpi_pm_set_device_wakeup(struct device *dev, bool enable); 630 int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable); 631 #else 632 static inline void acpi_pm_wakeup_event(struct device *dev) 633 { 634 } 635 static inline acpi_status acpi_add_pm_notifier(struct acpi_device *adev, 636 struct device *dev, 637 void (*func)(struct acpi_device_wakeup_context *context)) 638 { 639 return AE_SUPPORT; 640 } 641 static inline acpi_status acpi_remove_pm_notifier(struct acpi_device *adev) 642 { 643 return AE_SUPPORT; 644 } 645 static inline bool acpi_pm_device_can_wakeup(struct device *dev) 646 { 647 return false; 648 } 649 static inline int acpi_pm_device_sleep_state(struct device *d, int *p, int m) 650 { 651 if (p) 652 *p = ACPI_STATE_D0; 653 654 return (m >= ACPI_STATE_D0 && m <= ACPI_STATE_D3_COLD) ? 655 m : ACPI_STATE_D0; 656 } 657 static inline int acpi_pm_set_device_wakeup(struct device *dev, bool enable) 658 { 659 return -ENODEV; 660 } 661 static inline int acpi_pm_set_bridge_wakeup(struct device *dev, bool enable) 662 { 663 return -ENODEV; 664 } 665 #endif 666 667 #ifdef CONFIG_ACPI_SLEEP 668 u32 acpi_target_system_state(void); 669 #else 670 static inline u32 acpi_target_system_state(void) { return ACPI_STATE_S0; } 671 #endif 672 673 static inline bool acpi_device_power_manageable(struct acpi_device *adev) 674 { 675 return adev->flags.power_manageable; 676 } 677 678 static inline bool acpi_device_can_wakeup(struct acpi_device *adev) 679 { 680 return adev->wakeup.flags.valid; 681 } 682 683 static inline bool acpi_device_can_poweroff(struct acpi_device *adev) 684 { 685 return adev->power.states[ACPI_STATE_D3_COLD].flags.valid || 686 ((acpi_gbl_FADT.header.revision < 6) && 687 adev->power.states[ACPI_STATE_D3_HOT].flags.explicit_set); 688 } 689 690 #else /* CONFIG_ACPI */ 691 692 static inline int register_acpi_bus_type(void *bus) { return 0; } 693 static inline int unregister_acpi_bus_type(void *bus) { return 0; } 694 695 #endif /* CONFIG_ACPI */ 696 697 #endif /*__ACPI_BUS_H__*/ 698